A) 4
B) 1
C) 1/16
D) 16
Correct Answer: D
Solution :
(d) 16 From the formula, \[F=\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{{{q}_{1}}{{q}_{2}}}{{{r}^{2}}}\] \[F'=\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{2{{q}_{1}}\times 2{{q}_{2}}}{{{\left( r/2 \right)}^{2}}}=\frac{4}{1/4}F=16F\] \[\Rightarrow \,nF=16F\Rightarrow n=16\]You need to login to perform this action.
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